# We'll just use created_at to indicate when the record was created,
# which is when the email was sent.
class RemoveSentAtFromSentEmail < ActiveRecord::Migration
  def self.up
    change_table :sent_emails do |t|
      t.remove :sent_at
    end
  end

  def self.down
    raise IrreversibleMigration
  end
end
